| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 66.77 | 98 |
| 2015 | 66.63 | 99 |
| 2014 | 66.76 | 99 |
| 2013 | 67.35 | 95 |
| 2012 | 68.1 | 91 |
| 2011 | 68.73 | 90 |
| 2010 | 68.79 | 85 |
| 2009 | 68.2 | 93 |
| 2008 | 69.79 | 87 |
| 2007 | 69.66 | 89 |
| 2006 | 68.93 | 94 |
| 2005 | 68.65 | 93 |
| 2004 | 67.85 | 96 |
| 2003 | 67.46 | 97 |
| 2002 | 67.29 | 99 |
| 2001 | 67.11 | 106 |
| 2000 | 67.81 | 103 |
| 1999 | 67.47 | 103 |
| 1998 | 67.18 | 107 |
| 1997 | 66.96 | 110 |
| 1996 | 67.36 | 104 |
| 1995 | 67.58 | 106 |
| 1994 | 66.41 | 114 |
| 1993 | 65.31 | 127 |
| 1992 | 65.9 | 126 |
| 1991 | 67.41 | 115 |